What are some common myths about Jest coverage?

What are some common myths about Jest coverage?

Some common myths about Jest coverage include the belief that 100% coverage means your code is bug-free, or that coverage reports are the only measure of code quality.

Is 100% test coverage really necessary?

Not necessarily. While high coverage is good, it's more important to focus on meaningful tests that cover critical paths and edge cases.

How can I improve my Jest coverage?

You can improve Jest coverage by writing more unit tests, focusing on edge cases, and using tools like coverage reports to identify untested areas.

What should I do if my coverage is low?

If your coverage is low, analyze the coverage report to find untested areas, prioritize critical parts of your code, and write tests for those.

Are there any tools to help with Jest coverage?

Yes, Jest has built-in coverage tools that can be enabled with the --coverage flag, and you can also use additional tools like Istanbul for more detailed reports.